public QueryHandler(MainWindow mainWindow)
{
ShownResults = new UIResults();
IconCache = new Dictionary <IntPtr, ImageSource>();
MainWindow = mainWindow;
MaxResultsShown = 32;
}
protected override void OnQuery(string text)
{
UIResults results = new UIResults();
//TODO: implement query
results.Add(new UIResultItem(Environment.CurrentDirectory + "/Images/WebIcon.png", "Internet Search", "Not implemented yet"));
QueryEnd(results, text);
}
protected override void OnQuery(string text)
{
UIResults results = new UIResults();
foreach (KeyValuePair <string, Command> cmd in _commands)
{
results.Add(new UIResultItem("Images/CommandIcon.png", cmd.Key, cmd.Value.Description));
}
ShowResults(results, text);
QueryEnd(results, text);
}
protected override void OnQuery(string query)
{
if (IsScanning)
{
return;
}
string lowerCaseQuery = query.ToLower();
int closestIndex = -1;
if (_queryWorker.IsBusy)
{
_queryWorker.CancelAsync();
_queryWorker.Dispose();
_queryWorker = new BackgroundWorker();
_queryWorker.WorkerSupportsCancellation = true;
}
_queryWorker.DoWork += (sender, args) =>
{
closestIndex = FindClosestResultIndex(lowerCaseQuery); // heavy CPU
};
_queryWorker.RunWorkerCompleted += (sender, args) =>
{
if (closestIndex != -1)
{
UIResults results = new UIResults();
Log.Message(string.Format("Last query result: {0}", Path.GetFileName(BigResultList[closestIndex].GetPathString())));
for (int i = 0; i < MaxResultsShown; i++)
{
int index = (closestIndex + i);
if (index < BigResultList.Count && index > 0)
{
string path = BigResultList[index].GetPathString();
string file = Path.GetFileName(path);
UIResultItem uiItem = new UIResultItem(true, file, path);
results.Add(uiItem);
}
}
ShowResults(results, lowerCaseQuery);
QueryEnd(results, query);
}
else
{
QueryEnd(null, query);
}
};
_queryWorker.RunWorkerAsync();
}
public void ShowResults(UIResults results, string query)
{
IOrderedEnumerable <UIResultItem> ordered = results.SortByNameRelevance(query);
ordered = OrderResults(results, query);
if (ordered != null)
{
UIResults sortedResults = new UIResults();
int resultCount = 0;
foreach (UIResultItem result in ordered)
{
if (resultCount >= MaxResultsShown)
{
break;
}
sortedResults.Add(result);
resultCount++;
}
ShownResults = sortedResults;
OnResultItemsAddedForShow(sortedResults, MainWindow.ListBoxResults);
MainWindow.ListBoxResults.ItemsSource = sortedResults;
}
else
{
ShownResults = results;
OnResultItemsAddedForShow(results, MainWindow.ListBoxResults);
MainWindow.ListBoxResults.ItemsSource = results;
}
if (MainWindow.ListBoxResults.HasItems)
{
MainWindow.ListBoxResults.Visibility = Visibility.Visible;
}
OnResultsShown(results);
}
protected virtual void OnResultsShown(UIResults shownResults)
{
}
protected virtual IOrderedEnumerable <UIResultItem> OrderResults(UIResults currentOrder, string query)
{
return(null);
}
protected void QueryEnd(UIResults results, string query)
{
OnQueryEnd(results, query);
}
protected override IOrderedEnumerable <UIResultItem> OrderResults(UIResults currentOrder, string query)
{
//IOrderedEnumerable<QueryResultItem> sortedByDiscLength = currentOrder.OrderBy(x => x.ResultDesc.Length);
return(null);
}